devtools::install_git("http://git.thinkr.fr/Vincent/seo.git",
credentials = git2r::cred_user_pass (my.env$user_gitlab, my.env$pwd_gitlab))
devtools::install_git("http://git.thinkr.fr/Vincent/seo.git",
credentials = git2r::cred_user_pass ("demo", "demodemo"))
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